A wondrous cave, the walls and ceiling of which are made entirely of diamond. It is meant to be a place of meditation and rest; those who enter may gaze upon the beauty, commune with the brilliant clarity, and see their own soul reflected back to them, providing insight into their true purpose and calling. But beware the temptation: any who would attempt to steal a single gem or mar the purity of this sanctuary will find themselves—suddenly, and without warning—on the other side of the diamond wall, trapped in a maze of unshatterable jewels and doomed to starve, suffocate, and go mad (not necessarily in that order).